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GPR97 triggers inflammatory processes in human neutrophils via a macromolecular complex upstream of PAR2 activation

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Τίτλος: GPR97 triggers inflammatory processes in human neutrophils via a macromolecular complex upstream of PAR2 activation
Συγγραφείς: Chu, T-Y, Zheng-Gérard, C, Huang, K-Y, Chang, Y-C, Chen, Y-W, I, K-Y, Lo, Y-L, Chiang, N-Y, Chen, H-Y, Stacey, M, Gordon, S, Tseng, W-Y, Sun, C-Y, Wu, Y-M, Pan, Y-S, Huang, C-H, Lin, C-Y, Chen, T-C, El Omari, K, Antonelou, M, Henderson, SR, Salama, A, Seiradake, E, Lin, H-H
Στοιχεία εκδότη: Nature Research
Έτος έκδοσης: 2026
Συλλογή: Oxford University Research Archive (ORA)
Περιγραφή: Neutrophils play essential anti-microbial and inflammatory roles in host defense, however, their activities require tight regulation as dysfunction often leads to detrimental inflammatory and autoimmune diseases. Here we show that the adhesion molecule GPR97 allosterically activates CD177-associated membrane proteinase 3 (mPR3), and in conjugation with several protein interaction partners leads to neutrophil activation in humans. Crystallographic and deletion analysis of the GPR97 extracellular region identified two independent mPR3-binding domains. Mechanistically, the efficient binding and activation of mPR3 by GPR97 requires the macromolecular CD177/GPR97/PAR2/CD16b complex and induces the activation of PAR2, a G protein-coupled receptor known for its function in inflammation. Triggering PAR2 by the upstream complex leads to strong inflammatory activation, prompting anti-microbial activities and endothelial dysfunction. The role of the complex in pathologic inflammation is underscored by the finding that both GPR97 and mPR3 are upregulated on the surface of disease-associated neutrophils. In summary, we identify a PAR2 activation mechanism that directs neutrophil activation, and thus inflammation. The PR3/CD177/GPR97/PAR2/CD16b protein complex, therefore, represents a potential therapeutic target for neutrophil-mediated inflammatory diseases
Τύπος εγγράφου: article in journal/newspaper
Γλώσσα: English
DOI: 10.1038/s41467-022-34083-1
Διαθεσιμότητα: https://doi.org/10.1038/s41467-022-34083-1
https://ora.ox.ac.uk/objects/uuid:35225a03-1047-49f9-8de9-7326ea55be04
Rights: info:eu-repo/semantics/openAccess ; CC Attribution (CC BY)
Αριθμός Καταχώρησης: edsbas.7FD8B140
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  – Url: https://doi.org/10.1038/s41467-022-34083-1#
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  Data: GPR97 triggers inflammatory processes in human neutrophils via a macromolecular complex upstream of PAR2 activation
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  Data: Neutrophils play essential anti-microbial and inflammatory roles in host defense, however, their activities require tight regulation as dysfunction often leads to detrimental inflammatory and autoimmune diseases. Here we show that the adhesion molecule GPR97 allosterically activates CD177-associated membrane proteinase 3 (mPR3), and in conjugation with several protein interaction partners leads to neutrophil activation in humans. Crystallographic and deletion analysis of the GPR97 extracellular region identified two independent mPR3-binding domains. Mechanistically, the efficient binding and activation of mPR3 by GPR97 requires the macromolecular CD177/GPR97/PAR2/CD16b complex and induces the activation of PAR2, a G protein-coupled receptor known for its function in inflammation. Triggering PAR2 by the upstream complex leads to strong inflammatory activation, prompting anti-microbial activities and endothelial dysfunction. The role of the complex in pathologic inflammation is underscored by the finding that both GPR97 and mPR3 are upregulated on the surface of disease-associated neutrophils. In summary, we identify a PAR2 activation mechanism that directs neutrophil activation, and thus inflammation. The PR3/CD177/GPR97/PAR2/CD16b protein complex, therefore, represents a potential therapeutic target for neutrophil-mediated inflammatory diseases
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